With my experience in building solar bikes I might decide to open a shop in Ghana, West Africa.
Main products would be power measuring devices for electric current (DC and AC), converters and cables for solar systems.
For electric bikes you need converter. So I can advice customers, which kind of converter you can take to charge a smartphone.
For the begining, I’ll try to sell the the measuring devices.
The Consulting will contain the formula to calculate solar home systems, like stand-alone systems for energy suply.
I hope I can say welcome to you at my shop in Ghana in the future.